I am in the process of building a RC lawnmower which will utilize two Deep Cycle 12 V batteries in series and wheel chair motors as the prime mover. I would like to include a simple voltmeter using a voltage divider and an analog input on the Arduino.
Any reason a 10kOhm and 1kOhm voltage divider would not work for this, this should handle up to 50 V and the system runs at 24V (nominal). My concern is with the ripple voltage on the line exceeding 50 V and frying the Arduino. Is this a legitimate concern, if so what are my options?
*Note
I will be using Pololu 36v20 CS motor drivers